Small Joomla Module for measurement conversion

I am looking for a small joomla module that will convert metres to feet in real time for my website [url removed, login to view] if you have a look at the site you will see there is a similar module on the left of the page, but it's a bit basic, what I need is a module (possibly ajax) that will convert metres into feet on the fly, but it must also be able to round up or down depending on the result in feet, so if the feet comes to 19.56 I need it to round it up to the next full number so 20 in this case, but if the feet comes to 19.46 I need it to round down so 19 in this case, so any calculation that is .5 or below will round down and any calculation that is .51 or above will round up.

Hello, We have working domain from simple to extensive Website Coding like (HTML, PHP, MYSQL, DRUPAL, JOOMLA, Wordpress, JAVASCRIPT, Magento, CSS & A LOT MORE!) We request you to discuss this project in details with usLisää